Belt-shifter.



J. A. LONG.

BELT BHIPTER.

APPLICATION rum) JULY 1?, 190a Patented Dec. 7, 1909.

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45 bar of the frame, 1.

UNITED STATESWRATENT OFFICE.

JAMES A. LONG, OF PORTLAND, OREGON, A SSIGNOR F ONE-THIRD T0 ERNEST E.

' BOGGESS.

Barr-swarms.

Specification of Letters Patent.

- Patented Dec. 7, 1909.

Application filed July 17, 1908. Serial No. 444,068.

which it appertains to make and use the same.

*- My invention relates to improvements in belt shifters.

It has for its object to guard against accident to the attendant in shifting the driving belt, more articularly upon stepped or cone pulleys. lso, to dispense with improvised means or make-shifts for effecting the shifting of the belt; and to carry out these ends ,in a simple, economic and effective manner.

With these and other objects in view, the

invention consists of certain novel features of construction, combination and arrangement of parts as will be dacribed and particularly pointed out in the appended claims.

In the accompanying drawings, illustrating the preferred embodiment of my inven- 3 tion, Figure 1 is a broken side elevation thereof; Fig. 2 is a plan view thereof; Fig. 3 is a vertical sectional view of the same produced on the line 33 of Fig. 1; and Fig. 4 is a detailed sectional view taken on 85 the line 4-l of Fig. 1.

independent supporting means. Arran ed upon this frame is a second frame, 2, a so preferably rectangular in general contour, and having its end or supporting member, 3,slidably'supported u on the lower memaid frame 2 has its upper end composed of sections, 5 and 6 W tch lijave screw threaded sockets to receive thevertical bars 4 of the frame 2, and with their inner ends adapted to lap each 60 other and be clamped together by means of a bolt, 8, passing therethrough adjacent the inner ends of the sections. Upward extensions 9, integral with the sections are provided adapte to embrace the upper member or bar of the frame 1, so as to permit frame 2 to slide upon the frame.

Slidably mounted on the frame 2 is a. pair of arms comprising the horizontal members of the belt frame. These arms hm ethrcaded apertures at their ends lAl receive the tubular connectm round the rods ant serve to guide the frame members '13 which surthcreon as will be hereinafter described. The tubular connecting members 13 also serve as bearings for the belt rollers 12 which are journaled thereon in between the ends 'of the upper and lower arms of the frame, the latter acting as thrust bearings for the rollers. In the drawing the right:

hand tube 13 isconcealed by the end of the lower arm but the left hand tube 13 is' extended freely through and below the lower arm Where it may be en aged by any suitable tool to discn age itmm the upper arm whereby the left hand roller may be moved and the belt may be disengaged from the frame 10. In this connection it is also noted that in order to eifect the removal of the frame 2, from the frame 1, as in applying the frame 2 to the driving bolt when in the position last noted, the upper connectin member of the frame 2 is also detache from said frame 2. For effecting the latter purpose the sections are displaced by withdrawing their connecting bolt, 8, and then suitably unscrewing the sections, 5 and 6 from the frame 2, as will his readily appreciated.

To the frame 10 and the frame 2 are applied manipulating ro es, or lines, 14: and 15, respectively, suitably supported in, position upon pulleys or rolls, 16 and 17, for the pur ose of suitably moving said frames as in a "usting or a plying the belt to any one of t e ste s or diameters of the pulley or cone, as Wil be, it is thought, readil apparent, es ecially from Fig. 2 of the rawing. Sai frame, 2, has longitudinal movement and the frame 10 has vertical movement for accommodating the aforesaid ap plication of said belt to the steps of the ulley or cone. It will, therefore, be seen mm the foregoing arrangement and combination of arts that the belt shifting 0 eration is readily and conveniently effecte by the attendant without liability of being involved with the belts or pulleys, as heretofore has been experienced in performing the belt shifting operation in the usual way; and that it is not required to em loy make shifts or improvised means for effecting that purpose.

From the foregoing description, taken in connection with the accompanying drawing, the construction and operation of the invention will be readily understood without requiring a more extended ex )lanation.

Various changes in the orm, proportion and the minor details of construction may be resorted to with ut departing from the principle or sacrificing any of the advantages of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters-Patent, is

1. A step cone belt shifter comprising a supporting frame, a support horizontally slidable thereon, a belt frame carried on said support, and means for simultaneous] movin said belt frame horizontally an vertica ly to positively shift the belt to smaller or lar er steps.

2. step cone belt shifter comprising a supporting frame, a sup ort thereon, a belt frame surrounding the elt and sliding on the support, and means to simultaneously move the belt frame laterally and vertically to positively shift the belt to Smaller or larger steps.

3. A step cone belt shifter comprising a supportin frame, a belt frame sup ort hori zontally s idable thereon, a. belt rame removably carried by said supg'ort and adapted to removably surround the elt whereby the belt may be removed from the frame, and

means to simultaneously move the belt frame means whereby the belt ,frame is simul:

taneously moved laterally and vertically to positively shift the belt to smaller or larger ste s.

f n testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JAMES A. LONG.

Witnesses D. MILLER, R. I. YOUNG. 

